Cylinder-controlling mechanism for multirevolution bed-and-cylinder printing-machines.



No. 648,425. Patented May I, I900.

I T. M. NORTH. CYLINDER CONTROLLING MECHANISM FCB MULTIREVCLUTICN BEDANDCYLINDER PRINTING MACHINES.

(Application filed July 10, 1899.)

-4 Sheots-Shaet I.

(No Model.)

No. 648,425. Patented May], 1900.

T. M.-'NOBTH.

CYLINDER GONTBOLL|NG MEGHANISM FOB MULTIREVOLUTION ae'umw cvunnzaPRINTING MACHINES.

(Application filed July 10,1899.) (No Model.) 4 Sheets-Sheet 2 1: NoizmsPETERS co nuormurmv, wAsmucron, u. c

Patented May I, I900.

T. m. NORTH. CYLINDEB'GONTROLLING MECHANISM FOR MULTIREVDLUTION BED ANDCYLINDER "PRINTING MACHINES.

(Application filed July 10, 1899.)

4 Sheot sSheet 3 (No Model.)

m: uomus warms 00.. mom-Luna. wnsnmsm. n. c.

'No. 648,425. Patented May-I, I900.

T. mQuomn; CYLINDER CONTROLLING NECHANISM FOR IIULTIREVOLUTION BED ANDCYLINDER PRINTING MACHINES.

' 4 I (Application and zrul 10, 18994' (Nu Metal.)

4 Sheets-Sheet 4.

WQWMW b wz" I THNITED STATES" PATENT OFFICE.

THOMAS M. NORTH, OF NEW YORK, N. Y., ASSIGNOR TO ROBERT HOE, THEODORE H.MEAD, AND OHARLESHW. CARPENTER, OF SAME PLACE.

CYLINDER-CONTROLLING MECHANISM FOR MULTIREVOLUTION BED-AND-CY LINDERPRINTING-MACHINES.

SPECIFICATION forming part of Letters Patent 0.. 648,425, dated May 1,1900.

Application filed July 10, 1899. Serial No.723 312. (No model.)

To all whom it may concern:

Be it known that I, THOMAS M. NORTH, a subject of the Queen of GreatBritain and Ireland, residing at New York cit-y, county of Kings, andState of New York, have invented certain new and useful ImprovementsinCylinder-Controlling Mechanism for Multirevo lution Bed-and-OylinderPrinting-Machines, fully described and represented in the followingspecification and the accompanying drawings, forming a part of the same.

This invention relates to certain improve ments in cylindei controllingmechanism,said mechanism being more particularly intended for use inconnection with machines in which the cylinder makes a plurality ofrevolutions during a complete reciprocation of the-bed, such machinesbeing ordinarily known in the art as multirevolution machines.

' In multirevolution printing-machines, as is well known, the cylinderis driven in synchronism with the bed and usually by the bed during theprinting operation. After the printing operation is completed thecylinder continues its revolution while the bed is reversing, returning,and again reversing, the cylinder and the bed being separated during thereturn of the bed usually by lifting the cylinder by means of any of thewell-known mechanisms for this purpose.

While multirevolution printing-machines have certain advantages ascompared with printingunachines of the ordinary stop-cylin.

der type, among which may be mentioned speed in operation and thepossibility of using what is ordinarily known as afront deliverytherewith, it is necessary, of course, in feeding such machines topresent the sheets to the cylinder while the cylinder is in n10- tion,and there is liability that the sheet will not be truly fed, resulting,of course, in loss of register. Printing-machine constructions haveheretofore been suggested and are known in the art in which thecylinder, though making a plurality of revolutions during each completereciprocation of the bed, is brought to a stop in order that the sheetmay be fed thereto, theseconstructions being intended to obtain theadvantages incident to both the multirevolution and stop-cylinder typesof printing-machines.

The constructions now generally known in the art, however, dependlargely upon the use either of reciprocating parts or eccentric gearsand are expensive,

complicated, and not always certain in oper- 5 5' ation. v

The object of the present invention is to pro'-, duce a printing-machineof the multirevolir tion class in which the cylinder shall rotate insynchronism with the bed during the print- 66 -.ing operation and shallcontinue its rotation while the bed is reversing, returning, and againreversing, and at the same time shall have its speed of rotationvaried,preferably by being brought to a stop, to receive the sheetduring the period when it is not being driven in synchronism with thebed, thereby attaining the advantages of both the Inultirev0lu= .tionand stop-cylinder types of printing-ma chines, and to do this by asimple, cheap, com 70 pact mechanism which is open to none of thedisadvantages that are characteristic of the constructions now known inthe art.

With this and other objects in view the invention consists in certainconstructions and in certain parts, improvements, and combinations, aswill be hereinafter'described, and

fully pointed out in the claims hereunto appended.

In the accompanying drawings, which form a part of this specificationand in which like characters of reference indicate the same parts,Figure l is a side view of one form of a bed and-cylinderprinting-machine embodying the invention. elevation of the constructionshown in Fig. 1. Figs. 3, 4, 5, 6, and '7 are diagrammatic viewsillustrating various positions of the cylinder and bed during a completereciprocation of the bed and also illustrating the operation of thecylindercontrolling mechanism by which the requisite movements of thecylinder are produced.

Referring to the drawings, 1 is a frame of a printing-machine of anyordinary construc- 5 Fig.2 is a sectional end 85 Inasmuch, howtype, thisform of driving mechanism will preferably be used. In the machine shownthe bed is provided with arack 4, with which meshes a railroad-gear 5,said gear running on a stationary rack 6. The gear 5 is driven from amain driving-gear 7, mounted on a shaft 21, suitably supported in theframes, said'gear carrying a crank-pin 8,'which" is connected tothe'axle of the gear 5 by a connecting-rod 9.- The main driving-gearmay-- be driven in any suitable manner and is shown as driven from apinion 10, mountedon a shaft 11, suitably journaled in the frame I ofthe machineand driven from any suitable source of power. Thecylinder-shaft 12 is mounted in boxes 13, which are supported, asusuah'in the upper ends of standards on the frame. Q

As iswell known, it is'necessary in thistypeof machine thatthe cylinderand bed be sepr, aratedduringlthe return of the bed. Whilethis-separation may be eitectedin any known 4. v ism and'is well knownin the art.

form of mechanism may, however, be substi or desired way, itJispreferably eifected-by' raising andiowering the cylinder. The rais 5 1shown, however,- the cylinder is raised by" springs 14, operating onplunger-rods15 in the c v f usual manner, and is lowered by means of .30

ing'andlowering mechanismfor the cylinder may be of any desired type. Inthe machine pairs oftoggles 16, the lower toggle of each pair beingmounted on cross-bars 17;] The bars 17 are connected to rods 18,'whichare in turn connected to-the cylinder-boxes. The toggles are operatedfrom a rock-shaft 1 9, the

said shaft being given its movement from a cam 20, mounted on the shaft21,.thes'aid cam operatingthe shaft 19 through the medium of a pivotedlever 22 and a connecting-rod 23. The mechanismjust described is anordinary type of raising and lowering mechan- Any other tuted for itifdesired. g

The cylinder may be driven in sync'hron-ism with the bed in any desiredmannera's, for

instance,by an independent driving mechan- .ism. Preferably, however,the cylinder will cyl1nder, th1s engagement taking place when p bedriven: during the time when it moves in synchronism with the bed by thebed itself, as exact correspondence of movement is thus attained. .Tothis end, therefore, the bed is provided with the usual register-racks24, which racks engage with gears 25, fast on the the cylinder is in itslowered position.

The mechanism by which the cylinder is.

. driven when it is not moving in synchronism'.

5 a gear 26', which gear meshes with an 'intermediate27, mounted on theframe ina manwith the bed and by which it is controlled, so as to haveits movement varied, preferably by stopping and starting, with relationto the movement of the bed in order that a sheet maybe fed thereto,m aybe constructed within the limits of theinvention in various ways. In thepreferred formof thisconstruction, however, 'the cylinder-shaft isprovided with While the intermediate .27 might. be, conner to behereinafter described. The gear 26 and the intermediate 27 arepreferably continuously in mesh, and it is obvious, therefore, that whenthe cylinder is being driven by the bed the gear 26 will drive theintermediate 27, which at this time moves idly.

In the machine shown the shaft 21 is provided with a wheel 28', saidwheel having on its surface a segment 29, which meshes with the gear 27.t In order that the gear and segment may run easily and surely intoengagement without danger of crushing the engagin g teeth, the gearis'preferably provided with a short segment 27,'having enlarged teeth,and a short segment28, having similarly enlarged teeth, is attached tothewheel 28 alongside the end of the segment 29.- These enlarged teethmay, however, be omitted, if desired. The wheel-28 also carries a pairof pivoted CjQUPll'Ilg-lQVGIfSBO 31. The intermediate 27 carries a block32,- which is provided with studs 33 and 34, which studs are en- .1gagedat proper times by the pivoted coupling-levers 3.0 and 31. JThe'pivoted couplinglevers30 31,-being secu-redto the pwheel 28, ;have of;course a continuous rotating or traveling movement.- They arefurthermore given an additionalmovement, said movement being prod ucedbya.path-cam 35." The coupling-lever 30 carries .a stud or roller 36,

[which engages withthe groove of the-cam 35, and the lever31 carries'asimilar stud or roller .37, which alsoengagesthe groove of the cam.

In Patent No. 629,087,- granted J uly1'8, 1899, there is shownanddesc'ribed a. set of coupling levers similar to'those herein shownand described, thecou-plin'g-levers being used in the said patent tostop and start. theimpres- Siou -cylinder of a rotary printing-machinehaving a sheetvreceiving impression-cylinder which is brought to a stopto receive thesheet. The coupling-levers 30 and 31 operate in thepresent machine inthe samemanner as do the coupling-le-vers-ofthe saidpatent, Reference is, therefore made to this patent for a full andprecise description ofthe exact 0perationof these'levers. For thepurpose of this application it is sufficient to say that thecoupling-lever 30 engages the stud 33 at the proper times and through itstarts the intermediate 27 with an easy'and gradually-acceleratingmotion, this motion beingelfected not only by theforward movement of thewheel 28, which carries the said coupling-lever, but also being due tothe fact that through the path-cam 35 the coupling-lever 30 is caused tochange its angle of inclination with reference to the path in whichitrotates. The movement of the intermediate27 is of course transmittedto the cylinder through the gear-26. Inthe same way; the couplinglever31 engages the stud 34 at the proper time and brings the intermediate.27 to an easy and gradualstop, the motion of the in-.

termediate being of course transmitted to the cylinder through the gear26. I r

structed so as to remain constantly in mesh with the gear 26 without.being raised and lowered, this intermediate will preferably be mountedon a shaft or stud 38, having an eccentric portion 39, on whichthe gearruns. The shaft 38 carries a crank-arm 40, said arm being connected byaconnecting-rod 41 to a crank-arm 42, mounted on the shaft 19. By thisconstruction the toggles and the shaft 38 are connected, so as tooperate simultaneously. When, therefore, the toggles are straightening,so as to bring down the cylinder, the eccentric on the shaft 38 is beingfishifted so as to cause the intermediate 27 to move down with the gear26, and when the toggles are broken, so as to permit the spring to raisethe cylinder, the intermediate 27 is moved upward. v v

The operation of the construction will be clear from what has alreadybeen said, taken in connection with the brief description of the diagramFigs. 3 to 7. In the diagram illustrated in Fig. 3 the cylinder is shownat its point of rest, the grippers having closed upon the sheet. Thecoupling-lever 30 is just engaging the stud 33, and its furthercompoundmovement produced by the advancing movement of the wheel 28 and themovement on its pivot due to the cam 35 will cause the intermediate 27to be started from its position of rest with an easy and gradualmovement,this movement of course being transmitted to the cylinder 3through the medium of the gear 26.

-When the cylinder under the influence of the coupling-lever 30 and theintermediate 27 has been brought up to the speed of the bed, the togglesare operated to force the cylinder down, so that its gears 25 willengage register-racks 2t. At about the time this occurs thecoupling-lever 30 is caused to become disengaged from the stud 33, thisposition of the parts being indicated in Fig. 4. The cylinder the timethe racks 24 run out of engagement with the gears 25 the segment 29 011the wheel 28 runs into engagement with the enlarged teeth on theintermediate 27, and when the segment 29 and the intermediate 27 arefairly in mesh the cylinder-lifting devices are operated to raise thecylinder. Fig. 5 shows the parts in the position they occupy just as thesegment is running into mesh with the intermediate 27 and just beforethe cylinder-lifting devices have operated. The cylinder now is underthe control of the segment 29 and is rotated by this segment until thecouplinglever 31 comes into position to engage the stud 34, thisposition of the parts being shown in Fig. 6. 7 As the lever3l engagesthe stud 34: the segment 29 runs out of mesh with the intermediate 27.The lever 31 operates through a compound movement which is the reverseof that before described in connection with the CO e and started throughthe mechanism before described in an easy and gradual manner, whichobviates any sudden strains on the driving mechanism, and that thisresult is accomplished by exceedingly simple and effective devices,which consist in the main of many engaging surfaces which are inclinedto their path of movement.

While the specific form of mechanism which has been described isconsidered a preferable one, it is to be understood that this mechanismmay be varied within wide limits without departing from the invention.The invention is not, therefore, to be limited to the con trated, v

What is claimed is 1. Ina mnltirevolution bed-and-cylinderprinting-machine, the combination with the cylinder, of means fordriving it in synchronism with the bed during a part of a completereciprocation of the bed, and a controlling mechanism for varying thespeed of the cylinder with relation to the bed when it is not driven insynch ronism with the bed, said controlling mechanism includingtraveling engaging surfaces, one of which is movable, and meansforgiving said surface a movement with relation to its path of travel,substantially as described.

2. In a multirevolution bed-and-cylinder printing-machine, thecombination with the struction .which has been described andilluscylinder, of means for driving it in synchronism with the bedduring a part ofa complete reciprocation of the bed, and a rotatingcontrolling mechanism for varying the speed of the cylinder withrelation to the bed when it is not driven in synchronism with the bed,

said controlling mechanism including engaging surfaces, one of which ismovable, andv means for giving it a movement with relation to its pathof rotation, substantially as described.

3. In a multirevolution bed-and-cylinder printing-machine, thecombination with the cylinder, of means for driving it in synchronismwith the bed during a part of a complete reciprocation of the bed, and acontrolling mechanism for stopping and starting the cylinder when it isnot driven in synchronism withthe bed, said controlling mechanismincluding traveling engaging surfaces, one of which is movable, andmeans for giving said surface a movement with relation to its path oftravel, substantially as described.

4. In a multirevolution bed-and-cylindcr printing-machingthe combinationwith the cylinder, of means for driving it in synchronism with thebedduring a part of a complete reciprocation of the bed, and a rotatingcontrolling mechanism for stopping and startin g the cylindenwh'en it isnot driven in synchronism with the'bed, said controlling mechanismincluding engaging surfaces, one of which 7 is movable, and means, forgiving said surface a movement with relation to its path of rota tion,substantially asdescribed. v

5'. In a multirevo'lution bed-'and-cylinder printing-machine, thecombination with the cylinder, of means for driving itin synchronismwith therbed during a part of a completereciprocation of the.bed,'acontrolling mechanism forjvarying the speed of the cylinder withrelation to the bedwhen it is 'not' driven in synch'ronism with the bed,saidcon'trolling mechanism including engaging su'rfacesg'one of whichisinclined to its path of moveinen t, and means for varying theinclination of said i v surfaces,substantially as described;

saidlcontrolling mechanism includingeng'ag;

' .ing surfaces, one of which is Iin'clin ed-to'its 1 path of movement,a d I means for ar n he inclination. ofthe surfaces, substa "asdescribedi r 7. Ina multirevoluti-on bed-and cylinderprinting-machine, thecombination; with" a cylinder, of meansfordrivin'g it in'synchronismwiththe bed during a part of a'covmplete reciprocation of the bed, and acontrolling mechanism for varying the speed of the cyli'nderwithrelation to the bed when it'is not I driven in synchronisin with thebed, said mechanism including two pairs of engaging surfaces, onesurface of each pair being inclined to its path of movement,substantially "as described. I

8. In a m'ultirevolution bed-and-cylinder printing-machine,thefcombination 'with a stop-cylinder, of means for driving it insynchronism'with the bed during a part of. a com- .plete reciprocationof the bed, and a controlling mechanism for stopping andstarting thecylinder, said mechanism including trolling mechanismfor varying thespeed of ,thecylinderwith relation to the bed when it is not driven in,synchronisni with the bed} said mechanism including two pairs of en'-gaging surfaces, one surface of each pairbetwo pairs of travelingengaging surfaces, one surface of each pair being movable',and means forgiving it a movement with relation to its path of travel, substantiallyas described.-

9. In a multirevolution bed-and-cylinder printing-machine, thecombination with the cylinder, of means for driving it in synchronismwith the bed during a'part'of a complete reciprocation of the bed, and arotating coning inclined to its path of movement, substan tially asdescribed.

anism for varying. the speed of "the cylinder with relation to thebed'when it is not driven injsynchronismwith the bed, said 'mechan ismincluding two pairs of en gaging' surfaces,

one surface .of each' pair being inclined to its pathfofmo'vement, andmeans for varying the inclinati on] of said. sulffao, Substantially asdescribed;

" 112.111 'mfull irevolu'tibn' bedand.-c ylinder printing-.machine, thecombination with the cylinder, of'means-for driving in synchronism withthebed dnringa part of a: complete 'reciiiroca tion of the bed, acontrolling-mechanism'for stopping and starting the cylinder,

said mechanism [including twofpairs of enj gagingsurfacemone su'rfa'ceofeach pair be-.

ing inclined t-o :its path of movement, and

means for varying the inclination of said surfaces, substantiallyasdes'ci'ibed;

In a multirevolution bed-and-cylinder printing-machine, the combinationwith the cylinder, of means for driving itin synchronism with the bedduring a part of a complete reciprocationof the bed, a rotatingmechanism for varying the speed of the cylinder with relation to the bedwhen it is not driven in synchro'nism with the bed, said mechanismincluding two pairs of engaging surfaces, one surface of. each .pairbeing inclined'to its path of movement, and means for varying theinclination of said surfaces, substantially as described. v

' 14.. In a mnltirevolution bed-.and-c'ylinder is brought intoengagement to stopthe cylprinting-machinathe' combination with thecylinder, of meansfor driving it-in synchronism with the bed duringapart of a complete reciprocation of the bed,'a rotating controllingmechanism for stopping and starting the cylinder, said mechanismincluding two pairs of engaging surfaces, one surface of each pair beinginclined to its path ofmovement, and means for varying the inclinationof said surfaces, substantially as described.

15. In a multirevolution bed-and-cylinder printing-machine, thecombination'with the cylinder, of. a rotating member carrying a pair of.engaging surfaces, a second rotating member carrying a pair ofengagingjsurfaces, and meanswhereby'one surface of each pair inder andthe other surface of each pair is brought into engagement to start thecylinder, substantially as described.

16. In a multirevolution bed-and-cylinder printing-machine, thecombination with the cylinder, of a rotating member carrying a pair ofengaging surfaces, means for giving the surfaces a movement in additionto the rotating movement, a second member carrying a pair of engagingsurfaces, and means whereby the engagement of two surfaces of each pairis caused to stop the cylinder and the engagement of the other twosurfaces-0f each pair is caused to start the cylinder, substantially asdescribed.

17. In a multirevolution bed-and-cylinder printingmachine, thecombination with the cylinder, of a rotating member carrying a pair ofpivoted engaging surfaces, a second rotating member carrying a pair ofengaging surfaces, means for turning the pivoted surfaces about theirpivots, and means whereby the engagement of a surface of each pair iscaused to stop the cylinder and the engagement of the other surfaces ofeach pair is caused to start the cylinder, substantially as described.

18 In a multirevolution bed-and-cylinder printing-machine, thecombination with the cylnder, of a rotating member carrying a pair ofpivoted levers, of a second rotating member carrying a pair of studswhich are engaged by the levers, and means for turning the levers abouttheir, pivots, substantially as described.

19. In a multirevolution bed-and-cylinder printing-machine, thecombination with the cylinder, of a rotating member carryinga pair ofpivoted levers, of a second rotating member carrying a pair of studswith which the levers engage, and a cam for turning the levers abouttheir pivots, substantially as described.

20. In a multirevolution bed-and-cylinder printing-machine, thecombination with the cylinder, of a gear on the cylinder-shaft, a secondgear in mesh therewith, a pair of studs carried by the gear, a rotatingmember carrying a pair of pivoted levers, and a cam for turning thelevers about their pivots, substantially as described.

21. In a multirevolution bed-and-cylinder printing-machine, thecombination with the cylinder, of means for driving it in synchronismwith the bed during a part of a complete reciprocation of the bed, agear and segment, means whereby these parts are caused to drive thecylinder when it is not driven in synchronism with the bed, and meansfor varying the speed of the cylinder with relation to the bed byvarying the speed of one of these parts with relation to the other, saidmeans consisting of engaging surfaces carried by the parts,substantially as described.

22. In a multirevolution bed-and-cylinder printing-machine, thecombination with the cylinder, of means for driving it in synchronismwith the bed during a part of a complete reciprocation of the bed, agear and segment, means whereby these parts are caused to drive thecylinder when it is not driven in synchronism with the bed, means forvarying the speed of the cylinder with relation to the bed by varyingthe speed of one of these parts with relation to the other, said meansincluding a pair of engaging surfaces carried by the parts, one of saidsurfaces being inclined to its path of movement, and means for varyingping and starting the cylinder, said means includin g engaging surfacescarried by the gear and segment, said surfaces being brought intooperation when the gear and segment are out of mesh, substantially asdescribed.

24. In a multirevolution bed-and-cylinder printing-machine, thecombination with the cylinder, of means for driving it in synchronismwith the bed during a part of a complete reciprocation of the bed, agear and segment, means whereby the gear and segment are caused to drivethe cylinder when it is not driven in synchronism with the bed, andmeans for stopping and starting the cylinder, said means including twopairs of engaging surfaces, one surface of each pair being piv oted, andmeans for moving the pivoted sur* faces about their pivots, whereby thesur faces are given a compound movement, sub stantially as described.

25. In a multirevolution bed-and-cylinder printing-machine, thecombination with the cylinder, of means for driving it in synchronismwith the bed during a part of a complete reciprocation of the bed, agear and segment, means whereby the gear and se ment are caused to drivethe cylinder when it is not driven in synchronism with the bed, andmeans for stopping and starting the cylinder, said means including apair of pivoted coupling-levers, and a pair of studs with which thelevers engage, said studs and levers being carried by the gear andsegment, and means for turning the coupling-levers about their pivotswhile they are in engagement with the studs, substantially as described.

26. In a multirevolution bed-and-cylinder printing-machine, thecombination with the cylinder, of means for driving it in sychronismwith the bed during a part of a complete reciprocation of the bed, agear on the cylinder-shaft, a second gear in mesh with thefirstmentioned gear, a segment for driving the second gear, a pair ofpivoted coupling-levers, a pair of studs with which the levers engage,said coupling-levers and studs being carried by the gear and segment,and

means for turning the coupling-levers about their pivots, substantiallyas described.v

27. In a multirevolution bed-and-cylinder printing-machine, thecombination with the cylinder, of gears carried thereby, rackscarried-by the bed with which said gears engage, raising and loweringdevices for the cylinder, a gear on'the shaft of the cylinder, a secondgear meshing therewith, means for giving the second gear movementscorresponding to .those given the cylinder by the raising and loweringdevices, a segment for driving this F. W. H. CRANE, L. 'ROEHM.

